fix: lint changes vs the default branch only (#902)

Author: rbtr

.github/workflows/repo-hygiene.yaml

@@ -3,7 +3,7 @@ on:
   workflow_dispatch:
   push:
     branches:
-      - main
+      - master
   pull_request:
   schedule:
     # run once a day at midnight
@@ -18,17 +18,11 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
       - name: golangci-lint
         uses: golangci/golangci-lint-action@v2
         with:
-          # Required: the version of golangci-lint is required and must be specified without patch version: we always use the latest patch version.
           version: v1.40
-          # Optional: working directory, useful for monorepos
-          # working-directory: somedir
-
-          # Optional: golangci-lint command line arguments.
-          # args: --issues-exit-code=0
-          args: --timeout=5m
-
-          # Optional: show only new issues if it's a pull request. The default value is `false`.
+          args: --timeout=5m 
           only-new-issues: true

Makefile

@@ -470,7 +470,10 @@ PRETTYGOTEST := $(shell command -v gotest 2> /dev/null)
 
 LINT_PKG ?= .
 
-lint: $(GOLANGCI_LINT) ## Fast lint
+lint: $(GOLANGCI_LINT) ## Fast lint vs default branch showing only new issues
+	$(GOLANGCI_LINT) run --new-from-rev=master -v $(LINT_PKG)/...
+
+lint-old: $(GOLANGCI_LINT) ## Fast lint including previous issues
 	$(GOLANGCI_LINT) run -v $(LINT_PKG)/...
 
 # run all tests

README.md

@@ -1,6 +1,6 @@
 # Microsoft Azure Container Networking
 
-[![Build Status](https://msazure.visualstudio.com/One/_apis/build/status/Custom/Networking/ContainerNetworking/Azure.azure-container-networking?branchName=master)](https://msazure.visualstudio.com/One/_build/latest?definitionId=95007&branchName=master) [![Go Report Card](https://goreportcard.com/badge/github.com/Azure/azure-container-networking)](https://goreportcard.com/report/github.com/Azure/azure-container-networking) ![GitHub release](https://img.shields.io/github/release/Azure/azure-container-networking.svg)
+[![Build Status](https://msazure.visualstudio.com/One/_apis/build/status/Custom/Networking/ContainerNetworking/Azure.azure-container-networking?branchName=master)](https://msazure.visualstudio.com/One/_build/latest?definitionId=95007&branchName=master) [![Go Report Card](https://goreportcard.com/badge/github.com/Azure/azure-container-networking)](https://goreportcard.com/report/github.com/Azure/azure-container-networking) [![golangci-lint](https://github.com/Azure/azure-container-networking/actions/workflows/repo-hygiene.yaml/badge.svg?event=schedule)](https://github.com/Azure/azure-container-networking/actions/workflows/repo-hygiene.yaml) ![GitHub release](https://img.shields.io/github/release/Azure/azure-container-networking.svg)
 
 | Azure Network Policy Manager Conformance      |  |
 | ----------- | ----------- |